Drain cap



FIG. 1 is a front perspective view of a drain cap in accordance with the present design;

FIG. 2 is a back perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a front perspective view of the drain cap in accordance with the present design in the environment of a sink.

The sink shown in broken lines in FIG. 9 illustrate environment only that form no part of the claim. 

CLAIM The ornamental design for a drain cap, as shown and described. 